Multiple Choice
In prokaryotic cell architecture, what is the primary function of a plasmid?
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1. Overview of Cell Biology
Prokaryotic Cell Architecture
Multiple Choice
In prokaryotic cell architecture, bacterial cell walls are primarily composed of peptidoglycan and therefore lack which major structural component found in plant cell walls?
A
Lipopolysaccharide (LPS)
B
Teichoic acids
C
Cellulose
D
Peptidoglycan
Verified step by step guidance1
Step 1: Understand the composition of bacterial cell walls. Bacterial cell walls are primarily made of peptidoglycan, a polymer consisting of sugars and amino acids that provides structural support.
Step 2: Recall the major structural components of plant cell walls. Plant cell walls are mainly composed of cellulose, a polysaccharide that forms strong fibers providing rigidity and strength.
Step 3: Compare the components of bacterial and plant cell walls. Since bacterial walls have peptidoglycan and plant walls have cellulose, identify which component is unique to plants and absent in bacteria.
Step 4: Recognize that lipopolysaccharides (LPS) and teichoic acids are components found in bacterial cell walls, not plant cell walls, so they are not the missing component in bacteria compared to plants.
Step 5: Conclude that cellulose is the major structural component found in plant cell walls but absent in bacterial cell walls, which instead rely on peptidoglycan.
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